Range is the set of all possibel y - values for the function.
d(x) = 30x
d(16) = 30(16)
d(16)= 480
So, the range is:
0 ≤ d(x) ≤ 480
To find the graph, replace x by 20
d(20)= 30 (20) = 600
So, for x=20 , y=600
The graph is:
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